SAN file system sharing question

All,We are a Oracle ERP running business and are in process of upgrading our Linus from 4.4. to 5.4.We have evrything on the HP MSA1500cs SAN.Only OS is on the physical servers.

To avoid downtime, we have bought another server and have done a fresh install of 5.4What we want to do now ispoint this new server to same file system on the SAN accessed by one of our database server